Snape and dementors Was Re: Why does Dumbledore make Snape DADA teacher?

[zgirnius]

No: HPFGUIDX 158587


> Cyril:

> Hi Steve - can you refresh me as to canon where Snape shows Harry
> (or the DADA classes) alternative way to deal with Dementors? I am
> not able to locate the same.
> 
> I do remember Snape setting them an essay on Dementors - but I do
> not recollect him presenting any alternate ways to deal with
> Dementors...

zgirnius:
I'll just jump in, shall I?

> HBP, p. 448 US Hardcover
> "...Ron was now struggling to finish a viciously difficult essay 
for Snape that Harry and Hermione had already completed. Harry fully 
expected to receive low marks on his, because he had disagreed with 
Snape on the best way to tackle dementors, but he did not care..."

A later comment by Hermione confirms the topic of the essay was how 
to deal with dementors, so Harry was not expecting to be graded down 
for some irrelevant argument he has with Snape. Since Harry 
presumably suggested the use of the Patronus Charm, which he has used 
to good effect in the past and also taught to the DA, his 
disagreement with Snape means Snape must have suggested something 
else.